Movable apparatus for the manufacture of concrete



Ud 17 i967 E. MAIER 3,347,532

MOVABLE APPARATUS FOR THE MANUFACTURE OF CONCRETE Filed March 14, 1966 3wSheets-Shea?l l JN VEN TOR..

M2M/W ct. 17, 19,67 E. MAIER 3,347,532

MOVABLE APPARATUS FOR THE MANUFACTURE OF CONCRETE Filed March 14, 1966 3Sheets-Sheet 2 la f3 A fifa- 3:

N .f jy

INVENTOI'Q.

Oct. 17, 1967 E. MAlER 3,347,532

MOVABLE APPARATUS lFOR THE MANUFACTURE OF CONCRETE Filed March 1'4, 19665 Sheets-Sheet 3 INVENTOR. Y

Unted States Patent Oiilce Y 3,347,532 Patented Oct. 17, 1967 E 3claims. (ci. 259-154) The present invention relates to a movableapparatus for the manufacture of concrete in general and to an improveddevelopment of such apparatus, preferably equipped with an elevatormixer, which widens its use possibilities.

Apparatus for the manufacture of concrete has been known, in which on acommon frame formed as a running gear are disposed a distributor fordosing of the ingredients with a feeder for the accumulation of theseingredients, as well as conveyor means for the transportation of thecharge of mixed goods from the distributor to the mixer, scales for theingredients, binder means, as well as the production water, a mixer forthe finishing of the concrete and directing-as well ascontrol-instruments for the apparatus parts. The distributor is,thereby, if the mixture components are not stored in high containers,always designed such, that it receives the individual ingredients frommostly sector-shaped storing places disposed on the same level, in whichthey are stored separate from the movable apparatus.

The ingredients travel by their own gravity from the distributor intoareceiving and weighing container, in which the charge of the mixed goodsis joined and with which it is fed to the mixer. With the feederdisposed on the distributor, the ingredients are accumulated forsubstitution `of the4 used-'up masses towards the distributor. For thisreason, the distributor is disposed always at one end of the runninggear frame, while on the other end, the mixer-is disposed, from whichthe linished concrete is released, and the other apparatus parts arearranged between the distributor and the mixer.

The output of such apparatus is strongly influenced among others, by thecapacity of the distributor and by the height of the mixer, from whichthe latter can release the finished concrete. The capacity of thedistributor is determined Vby its active storage, that means, from themasses of the ingredients, which can be accumulated on it or in it, andwhich arrives by its own gravity in the receivingand weighing-container.By the releasing height of the mixer, the means of further conveyance ofthe concrete to the side is determined. If this releasing height is low,a repeated turn-over of the finished concrete cannot be avoided. Thisadditional turn-over reduces, however, the economy of the apparatus.

Since the apparatus is movable on the street, from the start certainlimits are set to the height of the distributor and of the mixer, whichlimits cannot be overdrawn. The structural height which is availabledoes not suffice, however, in many cases, in order to bring the movableapparatus for the manufacture of concrete while maintaining a simplestructure for achieving improved economy to the often desired greateroutput.

It is, therefore, one object of the present invention, to provide amovable apparatus Vfor the manufacture of concrete, wherein an elevatormixer is provided for great output and for great concrete releasingheight.

It is another object of the present invention, to provide a movableapparatus for the manufacture of concrete, wherein for the increase ofthe working height of the apparatus relative to the transportationheight of the distributor carrying the feeder in known manner, isequipped with supports which can expand, as well as telescope into eachother and the frame guiding the elevator mixer is adjustable as to itsheight by expandable and telescoping parts and securable in a variableheight.

A concrete storage-silo is disposed on the mixer frame adjustable as toits height, the releasing height of the storage-silo is variedsimultaneously jointly with the adjustment of the mixer frame.

The adjustment of the mixer takes place -by means of a rope and guiderollers, by means of two rope Winches, which are disposed adjacent tothe mixer frame on the longitudinal carriers of the running gear frame.The part of the mixer frame, which is adjustable as to its height, whichpart includes the elevator paths for the elevator mixer, is moved bymeans of a rope pull in an immovable guide rail, which is disposedparallel to the elevator path. The movement is simplified by supportingrollers, which run on bearing bolts, whichV in turn are connectedrigidly with the mixer frame adjustable as to its height. The bearingbolts have a bore equipped with inner thread, in which from the outsidethrough the guide rail, holding bolts are screwed in. The guide rail isfor this purpose equipped at predetermined distances with passing bores,so that at different height positions a rigid connection of the run-outmixer frame with the rail becomes possible. After the run-out of themixer frame into the desired re` leasing height, intermediate parts ofthe elevator path are screwed for the formation of a continuous elevatorpath towards the guide rail.

The apparatus designed in accordance with the present invention makes itpossible to trans-form within the shortest time from the transportationposition by run-out of the distributor jointly with the feeder and themixer frame into the working position and to obtain an output notexpected until now on concrete from movable apparatus, with theparticular advantage, that a concrete storage can be stored in a silo,the releasing height of which makes possible not only the service oflargest crane buckets, but also the transmittal to transportationvehicles. A further appreciable advantage is to be seen in the fact thatfrom the feeder, if it is designed as a cantilever device for thetransportation, only the cabin and the cantilever have to be removed,which can be done with a few manual steps. On the other hand, the entiremachine chassis can remain on the distributor, because for thetransportation it can be telescoped. The appreciable losses of time,which still occurred for the assembly and disassembly of movableapparatus for the manufacture of concrete, in case of a site change, arereduced by the apparatus designed in accordance with the presentinvention to the lowest possible degree.

With these and other objects in view which will become apparent in thefollowing detailed description, the present invention will be clearlyunderstood in connection with the accompanying drawings, in which:

FIG. 1 is a side elevation of a movable apparatus for the manufacture ofconcrete in transportation position with indicated working position;

FIG. 2 is a schematic elevation of the mixer frame in transportationposition;

FIG. 3 is a schematic elevation yof the mixer frame disclosed in FIG. 2,however, in working position; and

FIG. 4 is a fragmentary section of the guidingand elevator-path, thesection being taken along the lines 4 4 of FIG. 3.

Referring now to the drawings, the apparatus designed in accordance withthe present invention comprises a common frame 1, which is carried inthe transportation position by a removable front axle swivelling base 2and a removable rear axle base 3. A distributor 4 with its expandableand`telescoping supports 5 is mounted on the common frame 1. A feeder 6 ismounted on the distributor 4, which is here indicated as boom device. Ina guide path 7 is arranged the receivingand weighing-container 8, inwhich the applied ingredients enter from the distributor 4, in whichthey are weighed and which are broughtA to a transmittal hopper 9through which the transmittal into the elevator mixing container 10takes place. Fromsthe concrete scale 11 simultaneously, the binder meansand from the water scale 12 and by means of a Water clock, respectively,the required quantity of working water is added bymeans of separatechannels disposed in the transformation hopper 9. During thetransformation of the total charge, the mixing work operates already andupon further mixing, the elevator mixing container 10 is lifted in itsframe 13,\until it empties the finished concrete by tipping at the endof the elevator path 14 into the storage-silo 15. On ,the joint frameare further arranged the adjusting instruments 16, control indicators 17and a service platform 18.

FIG. 1 shows the apparatus in transport position, while the workingposition is shown in dotted lines. In the working position on both sidesof the frame 1 supports 19 are laterally screwed thereto, which permit amovement of the axle swivelling bases 2 and 3 Without interference.Furthermore, the supports 5 of the distributor 4 and the mixer frame 13are moved into the working .position A, so that the feeder 6 and thestoragesilo 15-assume `an appreciably higher position than during thetransportation.

In FIG. 2 the mixer frame 13 is shown again as a unit in transportposition. Behind the guide path 20 and expandable thereto isdisposedfthe elevator path 14 with its guides 21 and 22, in which theguide rollers of the rollers of the elevator mixing container 10 run.The displaceable part of the elevator path forms with the lower supports23 and 24, the inclined support 25 and vertical support 26 and thestorage-silo 15, the part of the mixing frame which is adjustable as toits height, which part is here crosshatched for a better showing.

On both sides of the frame 1, a rope winch 27 is arranged, from whichropes 28 run over guide rollers 29 and 30 to a fixed point onthe lowersupport 23. By means of the rope winch 27, the cross-hatched part ofthemixer frame` which is adjustable as to its height, is raised from itstransportation position (FIG. 2) into the Working position A, which isshown in FIG. 3. The storagesilo 15 is disposed now at a height whichpermits the direct loading of the transportation vehicles. After movingout the `mixer frame, it is merely necessary to screw intermediate partsof the elevator path for the extension of the elevator path below thelower support 23, behind the guide path.

In FIG. 4 is disposed the connection betweenthe guide path 20 and theelevator path 14 with its guides 21 and 22. On the elevator path andrigidly connected with the latter are disposed bearing bolts 31 onwhichsupporting rollers 32 run, which simplify the movement of the mixerframe and which move in turn ina rail 33 of the guide path. All bearingbolts 31 carry bores 34 having inner 60 thread, in which holding bolts35 equipped with a threaded shaft 36 are screwed from the outside bymeans of passage bores 37 disposed in the guide' path 20.

In this manner it is possible to connect also the run-out part of themixer frame in the shortest possible time safely with the remaining partof theapparatus and equally simple and fast to return the latter intothe moved-in transportation position.

While I have disclosed one embodiment of the present invention, it is tobe understood that this embodiment is given by example only and not in alimiting sense, the scope of the present invention being determined bythe objects and the claims.

l claim:

1. A rollable apparatus for the manufacture of concrete, comprising:

a common frame,

means for feeding, distributing, weighing, as well as mixing of concreteingredients and conveying of the finished concrete,

an elevator mixer` constituting said mixing means,

a distributor including expandable and telescoping supports for increaseof the working height of the apparatus,

a feeder carried by said distributor,

a mixer frame,`

an elevator mixer supported and guided by said mixer frame,'an immovableguide pathconnected withsaid common frame,

an elevator path disposed behind said guide path and including guides,said elevator mixer including `guide rollers running in said elevatorpath,

said elevator path comprising an immovable part and a displaceable part,lower supports, inclined supports and vertical supports secured to saiddisplace.- able part and movableu jointly with said displaceable part.

2. The apparatus,

cludes:

a concrete-storage silo secured to and movable with said supports.

3. The apparatus, as set cludes:

a rope,

a rope-winch rigidly secured to each of both sides of said common frame,

said mixer frame including a lower cross beam,

a rigid point secured to said lower cross beam,.and

said rope running to said rigid point from one of-said rope-Winches oversaid guide rollers, in order to lift said displaceahle part of saidelevator-path and said support upon operation of said rope-winch.

as set forth in claim 1, which inforth in claim 1, which in-y 1,351,14912/1963 France. 623,790 8/ 1961 Italy.

ROBERT W. JENKINS, Primary Examiner.

1. A ROLLABLE APPARATUS FOR THE MANUFACTURE OF CONCRETE, COMPRISING: ACOMMON FRAME, MEANS FOR FEEDING, DISTRIBUTING, WEIGHING, AS WELL ASMIXING OF CONCRETE INGREDIENTS AND CONVEYING OF THE FINISHED CONCRETE,AN ELEVATOR MIXER CONSTITUTING SAID MIXING MEANS, A DISTRIBUTORINCLUDING EXPANDABLE AND TELESCOPING SUPPORTS FOR INCREASE OF THEWORKING HEIGHT OF THE APPARATUS, A FEEDER CARRIED BY SAID DISTRIBUTOR, AMIXER FRAME,